Tire and rim



Jan. 7, 1936. D WMASQN 2,027,282

TIRE AND RIM Filed' Jan. 2, 1935 Patented Jan. 7 -193e PATENT oFFlcl-zTIRE AND mM v" Donald W.- Mason, Eugene, Orcg.

Appliation January z, 1935, serial No. 144

3 Claims.

It is the object of the present invention to provide a tire and rimconstruction which will facilitate changing of a tire when necessary;which will reduce the liability to accident and damage from blow-outs,punctures and tire failures, and to increase durability. An embodimentof the invention is illustrated in vthe accompanying drawing and willbehereinafter fully described, the novel features being defined in theappended claims. y.

` In the drawing:

Figure 1 is a transverse section, in perspective,

of the tire and rim structure. Y

Figures 2 and 3 are similar perspective views of the rim members. i-

'Ihe tire I is formed of Vrubber and canvas in .the usual manner withbeads I2 along its edges.

According to the present invention, the tire is provided with a centralwall or partition 2 which tapers from the tread portion of the tire andis formed at its edge with beads or flanges extending the full length ofboth its sides, two tubereceiving chambers being thus formed.

3^ The rim is constructed in two sections 5 and 6, each section having aflange 1 along its outer edge against which av-bead of the tire willseat,

and it will be noted that the inner surface of the.

rim section'adjacent the ange provides a transc verse seat 8 for theedge of the tire, the width of the seat being the same as the width ofthe tire edge. At the inner side of the tire seat is a transverselyconcave surface 9 which, adjacent the tire seat, is ush with the wall ofthe tire tl avoid pinching of the inflation tube which is disposedwithin the respective chamber of the tire.V

Along the inner'edge ofthe rim section, on its inner circumference, is abead, rib or ange I0 the inner. surface of which is beveled, as shownlat II, whereby it may. engage underthe correspendingv bead or nan/ge 4on the partition or wall 3 of the tire, as shown in Figure 1. When thetwo rim sections are secured together, the end of the partition will beflrmly clamped by and between the sections, as will be understood. Bothrim sections have openings or( notches I2 in theirv edges to accommodatethe inflation valves, indicated at I3, on the tubes housed inftherespective chambers of the tire. 4

The major rim section 5 is constructed with an inner rim or felly bandI4 to which the spokes I5 are secured in any approved manner. This band,at its outer edge, is formed integral with a rib' I6 on the main body ofthe rimvsecti'on whereby it is spaced from the outer partition-clampingband or member. lThe inner band extends across and partially inated.'

vided with openings I8 alined with the notches 5' I2 whereby theinflation valves are accommodated and are accessible when inflation ofthe tire is needed. The minor rim section has a rib I9 formed thereonand onv the sideV of the rib presented to the major section is a ledgeor. shoul- 1o der 20 upon which the edge of the rib I'I will rest, theside of the rib I-'I abutting the side of the rib I9 and theover-hanging edge of the band I4 resting on the edge of the rib I9, asclearly shown in Figure 1.

A threaded stud or lug rib II to pass through an I9, and around saidopening a shallow recess 23 is formed in said rib to furnish a planewall 24 against which anut 25 may be turned home on 20 the stud ZI tosecure the rim sections together.

In assembling the tire and rim, the tubes arek placed in the respectivechambers of the tire and The tire is then slipped over the major rimsection until its bead seats against 25 the flange ofthe rim and the endvof the partition 3 engages upon the bead I9. the stem of the neariniiation valve passing into the notch or slotl I2 and being pushed upthrough the opening I8. The second valve stem is then pushed up through30 l5 2| projects from the the second opening I8 and thereafter theminor e rim section' is brought into position, the notch or s slot I2passing around the second valve stem, the stud 2I passing through theopening 22 and thev rib I9 seating against the ribl I1 and under the 35edge of the band I4. The nut 291s then'turned home, securing the partstogether.v

It is highly improbable that both compartments of the tire will'bedeilatedat the same, time as a result of puncture or other unforeseencause. 40 Hence, the factor of safety is high. Should one chamber be4deflated through ,a blow-out or other accident, the other half ofthetire will carry the loadand the car will remain under completecontrol, as before the accident. When the ordinary 45 at high speed,centrifugal force in the tire which aptire is turning stretches thematerial preciably weakens the tire and shortens its life,

opening 22 in the rib traino or reaches a repair station without damageor strain to either tire or rim.

Having described my invention, claim is:

1. In a. tire and and rim section, a tire having a central partitionandinflation chambers at the sides of the partition, rim sectionsengaging the tire at the sides of the same and having outer bandsclamping the partition and supporting inflation tubes in the tire. saidbands` each having an opening for an ination valve stem, a rib on onesection, an inner feily band on the other 'section having openings forinflation valve stems, a rib on said felly band intertting with the rstnamed rib, and means carried by both ribs to secure the sectionstogether.

2. In a tire and rim section, a tire having' a central partition andinflation' chambers at the sides of the partition, rim sections engagingthe tire at the sides of the sameand having outer bands clamping thepartition and supporting infiation tubes in the tire, one of thelsectionsr having an innerfelly band, a rib on the outercirwhat Icumference of said feIiy band near the edge thereof, arib on' the otherrim section to engage under the edge of the felly band and abut the ribthereof, a ledge on the second named rib engaging under the felly bandrib, and means carried by both ribsr to securethe sections together.

3. In a/tire and rim section, a tire having a centralv partition andinflation chambers at the sides of the partition, said partition beingprovided with anges along its sides at its edge, rim sections engagingthe tire at the sides of the same and having outer bands provided attheir opposed edges with bevelled ribs engaging under the anges o'n thepartition, said bands each having an opening for an iniiation valvestem, a rib on 15 one rim section, an inner felly band on the other rimsection having openings for ination valve stems, a rib on said fellyband intertting with the first named rib, and means carried by both ofthe intertting ribs to secure the rim together. Y

DONALD W. MASON.

sections 20

